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many test tubes in a test in a research laboratory of a university. symbolic photo for learning and researching.

Stock Photo:
Image ID: 136152458
Copyright:
Small
500x334 6.9"x4.6" (72dpi) 138 KB
Med
1000x667 3.3"x2.2" (300dpi) 437 KB
Large
5760x3840 19.2"x12.8" (300dpi) 3.7 MB
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